PIN AS 2081941 - Caterpillar

Illustration 9 g03406077
The arrow represents the front of the engine block
Bolt numbering for 434-0486 Connecting Rod Gp, 434-0487 Connecting Rod Gp, 376-4939 Connecting Rod, 376-4938 Connecting Rod, 417-7902 Connecting Rod, and 417-7903 Connecting Rod. Bolt (1) is always identified as the center bolt on the bearing tab side of the connecting rod.
(A) Bearing tab side
(X) Odd numbered connecting rod
(Y) Even numbered connecting rod
Use the following procedure to tighten the connecting rod bolts for Type 2 connecting rods:
Table 5
Assembly Specifications for Type 2 Connecting Rods with 290-2541 Bolts
Item Qty Part Specification Description
1 6 290-2541 Bolt Use the following procedure to tighten the bolts of the connecting rod:
Note: Apply Bel-Ray Molylube 67700 to the threads and middle rings of bolt and the contact surface under the bolt head. Refer to the following link for ordering purpose.
www.belray.com
1. Install bolts (1) and spacers (2). Hand tighten the bolts.
Bolt 1 is identified as the middle bolt on the tab side of the bearing on the connecting rod. Tighten this bolt first to seat the bearing into the bore.
2. Tighten bolt 1 and bolt 2 to 85 5 N m (63 4 lb ft).
3. Tighten bolt 3 and bolt 4 to 85 5 N m (63 4 lb ft).
4. Tighten bolt 5 and bolt 6 to 85 5 N m (63 4 lb ft).
5. Again tighten bolt 1 and bolt 2 to 85 5 N m (63 4 lb ft).
6. Again tighten bolt 3 and bolt 4 to 85 5 N m (63 4 lb ft).
7. Again tighten bolt 5 and bolt 6 to 85 5 N m (63 4 lb ft).
8. Turn bolt 3 and bolt 4 for an extra 90 5 degrees.
9. Turn bolt 5 and bolt 6 for an extra 90 5 degrees.
10. Turn bolt 1 and bolt 2 for an extra 90 5 degrees.
2 2 366-5649 Spacer
Table 6
Assembly Specifications for Type 2 Connecting Rods with 428-7386 Bolt As
Item Qty Part Specification Description
1 6 428-7386 Bolt As Use the following procedure to tighten the bolts of the connecting rod:
Note: Lubricate each bolt with Bel-Ray Molylube 67700 by fully coating the elastomer rings, threads, and the contact surface under the bolt head. Refer to the following link for ordering purpose.
www.belray.com
1. Install all the bolts into the spacers by pushing and rotating the bolt simultaneously.
Note: Rotating the bolt while pushing will avoid damage to the bolts.
2. Install the bolts into the connecting rod cap by pushing and rotating the bolt simultaneously.
3. Engage the threads by pushing and slowly rotating the bolt. Do not tap the bolt. All six bolts should have the threads engaged before the joint is drawn together on either side. The order of engaging the threads is bolts 1-2-3-4-5-6. Engaging bolt 1 and 2 first helps center the cap to the connecting rod. Once bolts 1 and 2 threads have engaged install the remaining bolts